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Finding the Fourth Proportional to 93,118.76, 128,503.62 and 52,840.40

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Solution

The fourth proportional to 93,118.76, 128,503.62 and 52,840.40 is: 72,919.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,118.76 : 128,503.62 = 52,840.40 : x
  2. Step 2: Convert to fraction form
    93,118.76/128,503.62 = 52,840.40/x
  3. Step 3: Cross multiply
    93,118.76x = 128,503.62 × 52,840.40
  4. Step 4: Simplify right side
    93,118.76x = 6,790,182,682.25
  5. Step 5: Solve for x
    x = 6,790,182,682.25/93,118.76
  6. Step 6: Final answer
    x = 72,919.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.